In rugby, the term "15 22" does not have a specific meaning. However, there is a new law called the 50:22 kick that was introduced in 2021 by World Rugby as part of a batch of law trials. This law means that if an attacking team kicks the ball from anywhere in their own half and it bounces inside the oppositions 22 before then bouncing into touch, the kicking team gets the throw at the resultant lineout. The hope is that this new law will force defences to keep more players in the backfield, therefore reducing their ability to bring high linespeed in the frontline and opening up space for the attacking team.